California Medical Malpractice Statute of Limitations
Medical malpractice cases in California are governed by strict deadlines. Missing the deadline can prevent a claim from moving forward entirely, regardless of how strong the case may be.
Understanding how these time limits work is critical because the law does not always measure time from the date of the medical treatment. In many cases, the deadline depends on when the injury was discovered.
The general rule
In most California medical malpractice cases, the deadline to file a lawsuit is the earlier of:
One year from the date the injury was discovered
Three years from the date of the injury
This is often referred to as the “one-year / three-year rule.”
This means a claim can be time-barred even if the patient did not immediately realize something went wrong.
What “discovery” means
Discovery does not only mean when a person actually learns that malpractice occurred. It can also include when a person reasonably should have known that something was wrong.
This may include situations such as:
- Unexpected complications that do not improve
- A condition getting worse instead of better
- A different provider identifying a possible error
- Symptoms that do not match what was expected after treatment
Once a reasonable person would suspect that something may be wrong, the one-year clock can begin.
The three-year outside limit
In most cases, California imposes a maximum three-year limit from the date of the injury.
However, there are limited exceptions where this period may be extended, including:
- Fraud by the healthcare provider
- Intentional concealment of wrongdoing
- A foreign object left in the body with no medical purpose
These exceptions depend heavily on the facts and often require detailed review.
Special rules for minors
Different rules apply when the injured patient is a minor.
In general:
- A minor has three years from the date of the wrongful act
- If the child is under six years old, the deadline is three years or until the child’s eighth birthday, whichever is longer
Because these rules can vary depending on the situation, early evaluation is important.
The 90-day notice requirement
Before filing a medical malpractice lawsuit in California, a written notice generally must be served on the healthcare provider at least 90 days before filing suit.
This notice must include:
- The legal basis of the claim
- The type of injuries
- The nature of the losses
If the notice is served during the final 90 days of the limitations period, the deadline may be extended by 90 days.
Why timing matters
Medical malpractice cases often require:
- Collection of medical records
- Review by qualified experts
- Identification of all responsible parties
Waiting too long can make it more difficult to investigate what happened and preserve important evidence.
Common mistakes that affect deadlines
Many valid claims are lost because of timing issues. Common mistakes include:
- Assuming the deadline starts on the date of treatment
- Waiting for a definitive diagnosis before taking action
- Believing insurance discussions extend the deadline
- Not accounting for the 90-day notice requirement
These issues can arise even in strong cases.
How this affects your case
Timing is not just a technical issue. It directly affects whether a case can be brought at all.
If you believe a medical provider caused harm, it is important to understand what to do after medical malpractice so you can protect your claim early.
You may also want to understand how much a medical malpractice case is worth in California, as both timing and damages play a role in how a case is evaluated.
For a broader overview of how these claims work, see California medical malpractice.
Common questions about deadlines
If you are dealing with a potential malpractice case, you may be asking:
- When does the one-year clock start?
- What if I did not discover the injury right away?
- Do exceptions apply in my case?
- What happens if the deadline passes?
- How does the 90-day notice requirement work?
These questions depend on the specific facts of what happened and when the injury was discovered.
Click Here to Start Your Free Case Consultation Today
Llame Aqui Ahora Para Una Consulta Gratuita
English - Spanish - Armenian
Additional Confidential Interpreters Available
Find Us on Social Media. Learn about real cases, insights, and what matters after an accident.
YouTube
Instagram
LinkedIn
Facebook
TikTok
(818) 237-5888